World Formula Racing Engine

Primary Use: Karting, Microstocks, Faskarts, Junior Sprint, Short Course Trophy Karts, Quarter Midgets

Building off of the success of the Animal Racing engine, the World Formula was launched in 2003 in accordance with the CIK World Formula class rules. This complete engine package balances the latest in engine design and technology to provide racers with a consistent, low-maintenance and low-cost platform, in which to sharpen their driving skills and chassis setup. Hand-built and individually tested in Milwaukee, Wisconsin.

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Key Specifications

MODEL/TYPE(S) 124335 8105-01/124335 8106-01 M.A.P. Price $1,149.00/$939.00 horsepower/torque 11.5 hp/13 ft. lbs. torque*
Displacement 204cc Bore/Stroke 2.6875”/2.6885” Compression Ratio 9.5 to 1
Rpm–Digitally Limited 7,100 RPM Factory Timing 29 degrees BTDC Fuel Type 91 Octane

Details

Race Only Features +

  • Reinforced, cast iron sleeved, dual ball bearing racing cylinder
  • Single cast, custom aluminum alloy cylinder head with 'kidney bean'' combustion chamber, custom seat/guide material and CNC Machined Intake D-port.
  • 2024 Billet aluminum rod with reinforced I-beam
  • Carbon steel crankshaft with induction hardened micro-polished crankpin reinforced timing gear
  • Cam ground, barrel faced, eutectic alloy domed piston with 3-piece ring set with chrome faced top ring
  • .308 max. lift ground cam with stellite-faced lobes and built in mechanical compression release
  • Dual high silicon valve springs
  • High grade stainless steel, dished valves with nitrited exhaust
  • 3-piece automotive style keepers and reinforced rocker arm and lock ball
  • Digital ignition with built in rev limiter
  • Steel hub, cast aluminum flywheel
  • Walbro 26mm round slide, fully adjustable jet carburetor
  • Custom graphoil composition, fire ring head gasket

Fastener Torque Specs +

Description Wrench / Socket Size Torque
Air Guard 7mm 40-50 lb-in. (4.5-5.6 Nm)
Blower Housing 10 mm & 3/8” 60-110 lb-in. (7-12.5 Nm)
Carburetor (to manifold) 10 mm 80-110 lb-in. (9-12.4 Nm)
Connecting Rod 5/16” 125-135 lb-in (14-15 Nm)
Cylinder Head Bolts 10 mm 200-220 lb-in. (20-27 Nm)
Exhaust Brace Screws 10 mm 95-125 lb-in. (11-14 Nm)
Flywheel Nut 15/16” 55-75 ft-lbs. (74.5-101 Nm)
Flywheel Fan 10 mm 180-240 lb-in. (20-27 Nm)
Intake (to cylinder) 5 mm Allen 70-90 lb-in. (8-10.2 Nm)
Oil Drain Plug 3/8” 100-125 lb-in. (11-14 Nm)
PVL Ignition Module 7 mm 20-35 lb-in (2.3-4 Nm)
Rocker Arm Stud 7/16 90-120 lb-in. (10-14 Nm)
Rocker Arm Set Screw 1/8” Allen 50-70 lb-in. (5.6-7.9 Nm)
Spark Plug 5/8” deep 95-145 lb-in. (11-16.4 Nm)
Side cover 10 mm (patched, grade 8.8) 10 mm (unpatched, grade 8.8) 10 mm (SIMS patched, grade 10.8) 215-230 lb-in. (24-26 Nm) 160-175 lb-in. (18-19 Nm) 260-270 lb-in. (29-30 NM)
Top Control Cover 10 mm 70-90 lb-in. (8-10 Nm)
Valve Cover 10 mm lower & 3/8” 30-60 lb-in. (3.5-7 Nm

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